I am using Ubuntu 16 and Firefox 53. I need Firefox 45_ESR and 52.
Unpacked folder in /opt/firefox45 and /opt/firefox/52.
Profiles created and stored in ~/.mozilla/firefox but when I do firefox -P nameOfProfile the version that starts is the latest 53.0.
How can I solve that?
The version of Firefox is not given by the profile but rather by the executable itself.
You have to make sure the firefox -P command refers to the Firefox executable you are expecting. For example, to run a profile with Firefox 45, I would try to directly call the executable from /opt/firefox45:
/opt/firefox45/firefox -P
Assuming the executable lives in the root directory. A similar thing can be done for Firefox 52: just pick the executable from the related directory.
